Discharge Coefficients of Oblique Weirs

Author

Samuel Egnew Tingey, Utah State University

Date of Award:

8-2011

Document Type:

Thesis

Degree Name:

Master of Science (MS)

Department:

Mechanical and Aerospace Engineering

Committee Chair(s)

Barton Smith

Committee

Barton Smith

Committee

Blake P. Tullis

Committee

Robert E. Spall

Abstract

Oblique weirs are those weirs placed at an angle with respect to the channel centerline. They can be used in canal applications where more discharge is needed, but there is limited freeboard. The discharge coefficients were determined for 54 different weirs by measuring total head for various flows over each weir. These weirs included sharp, half round and quarter-round-crested weirs. There were 18 weirs for each crest shape with three weir heights for each angle tested. The oblique angles tested were 10°, 15°, 25°, 45°, 60°, and 90° with respect to the channel centerline, with the nominal weir heights being 4, 8, and 12 inches. The half-round-crested weirs were the most efficient, followed by the quarter-round-crested weirs and the sharp-crested weirs were the least efficient. By decreasing the oblique angle, the weir length became longer and the weir would be more efficient than the normal weir.

Checksum

1d0ad233172985827d43165b7c84b68e

Comments

This work made publicly available electronically on September 1, 2011.

Recommended Citation

Tingey, Samuel Egnew, "Discharge Coefficients of Oblique Weirs" (2011). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 1010.
https://digitalcommons.usu.edu/etd/1010